11231042511 has 16 divisors (see below), whose sum is σ = 16390999520. Its totient is φ = 6798107520.

The previous prime is 11231042509. The next prime is 11231042597. The reversal of 11231042511 is 11524013211.

It is not a de Polignac number, because 11231042511 - 2¹ = 11231042509 is a prime.

It is a super-2 number, since 2×11231042511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231042311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2358076 + ... + 2362833.

It is an arithmetic number, because the mean of its divisors is an integer number (1024437470).

Almost surely, 2^11231042511 is an apocalyptic number.

11231042511 is a deficient number, since it is larger than the sum of its proper divisors (5159957009).

11231042511 is a wasteful number, since it uses less digits than its factorization.

11231042511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4720986.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 11231042511 its reverse (11524013211), we get a palindrome (22755055722).

The spelling of 11231042511 in words is "eleven billion, two hundred thirty-one million, forty-two thousand, five hundred eleven".